While the Arduino family of boards connect to your computer using a USB virtual serial port, the ATmega ones have an actual serial connection on-board.

As you can see in the schematic all three TC74 sensors have their SDA and SCL pins connected in series to pin A4 and A5 on the Arduino board. The two 4.7K pull-up resistors must be used when using I2C ...

They used the webaudio API to send serial data to a remote Arduino. The hack uses a FET, a capacitor, and a few resistors. They didn’t quite build a real modem with the audio.

Build an Arduino-based 4-Channel Data Logger Wouldn't it be nice to have your own simple on-demand data logger for those occasions when you don't have connectivity? Here's how to build one using an ...

Example MQTT architecture: Arduino publishes soil data via serial to Pi. Pi republishes via MQTT to a cloud broker (e.g., Mosquitto). Mobile app subscribes and displays live readings. Going Further: ...

Particle’s Electron is a “cellular Arduino” with a global data plan ARM- and GSM-based board promises quick on-ramp for mobile IoT development.

With 1sheeld, you strap just one shield (hence the name) to your Arduino board. That shield acts as a wireless middle-man, piping data between your Arduino and your handset.

Developers and Arduino enthusiasts looking for a way to improve their data analysis may be interested in the new Advanced Chart Widget available for the Arduino Cloud. If you are not yet had the ...